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True three-dimensional simulation angle description and direct projection display method

A 3D simulation and projection display technology, applied in the real 3D simulation and parallel fields, can solve problems such as difficulty in ensuring real-time performance, and achieve the effect of solving the speed bottleneck

Active Publication Date: 2014-11-12
XIAN FEISIDA AUTOMATION ENG
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Problems solved by technology

However, since true 3D simulation needs to be described in terms of more than two coordinate systems, and coordinate transformation and spherical nonlinear distortion correction are required, multiple projectors can be used for splicing, image calling, assignment of video memory to each projector, and multi-channel Problems such as image synchronization make it difficult to guarantee real-time performance

Method used

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  • True three-dimensional simulation angle description and direct projection display method
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  • True three-dimensional simulation angle description and direct projection display method

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Embodiment Construction

[0012] The projection screen is a hemisphere, the resolution of the selected projector is 1024*768, and the size of each 3D visual image is 8192*4096, which is stored in the storage space given in advance, and the display control computer updates the content to be displayed every cycle ;Follow the steps below to implement.

[0013] 1 According to the projection effect, the spherical surface is defined by the height angle α and the azimuth angle β. The range of the height angle is 0-90°, and the range of the azimuth angle is 0-360°. It can give one-to-one corresponding angle coordinates for all points on the spherical surface;

[0014] 2 The real world coordinates to be displayed and the coordinates of each projector are described by the unified elevation angle and azimuth angle coordinate system in (1), and all the different elevation angle and azimuth angle coordinates corresponding to the projection area of ​​each projector on the screen (α i , β i ) can be determined after...

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Abstract

The invention provides a true three-dimensional simulation angle description and direct projection display method. The method comprises the following steps: defining a spherical surface in an angular altitude alpha and an azimuth angle beta according to the projection effect, wherein the angular altitude ranges from minus alpha 0 to 90 DEG, and the alpha 0 can be directly determined according to a three-dimensional projection screen, and the azimuth angle ranges from 0-360 DEG, so that accurate coordinates can be provided for of all points on the spherical surface; describing a true world coordinate and each projector coordinate to be displayed by using the uniform angular altitude and azimuth angle, thereby determining all different angular altitude and azimuth angle coordinates (alpha i, beta i) of projectors corresponding to the projection regions on the screen after the projector is mounted and debugged; and reading the corresponding coordinate (alpha i, beta i) of the real world on line without on-line computation, and becoming a rectangular region in a proportion to be directly projected. The real world is realized through the angular altitude and the azimuth angle, the unification of the projector coordinator systems solves the speed bottleneck problem of simulation with a software method.

Description

technical field [0001] The invention relates to a direct assignment and display method of a true three-dimensional simulation area, belonging to the technical field of true three-dimensional simulation and parallelism. Background technique [0002] True 3D simulation has important applications in aviation, aerospace, transportation and other fields, and has always been valued by scientific researchers. As early as 1960, people proposed a comprehensive simulation technology based on computers, graphics and image processing, multi-sensors, networks and ergonomics, usually expressed as "virtual reality" (or virtual environment, virtual environment, spiritual environment, etc.). In a sense, virtual reality technology is an extension of computer visual simulation technology, and it is the crystallization and reflection of highly developed computer technology in the application process of various fields. It not only includes graphics, image processing, pattern recognition, Networ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B35/20H04N13/00
Inventor 史忠科
Owner XIAN FEISIDA AUTOMATION ENG
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